The spontaneous relaxation of upper levels is considered in numerical solutions. The calculation results show the evolution of pulse energy and the distribution of ionizationparticle.
数值计算中考虑了两个上能级的自发辐射速率， 给出了脉冲能量的空间演化及电离粒子在空间的分布。
2
The phenomenon of ionization interference is studied with partial-wave expansion method through the particle population of the ionized state.
应用分波展开法，通过电离态上的粒子布居，研究了电离相干现象。
3
A transverse field gas ionization chamber for particle identification at the Radioactive ion Beam Line in Lanzhou (RIBLL) is described.